The Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings was updated and is designated ANSI/AWC WFCM (Figure 1). WFCM. • Wood Frame Construction Manual. • WFCM uses ASCE 7- 10 wind design provisions. • IRC uses ASCE wind design provisions. The Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings was developed by the American Wood Council (AWC) Wood Design.
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Learn the appropriate high wind, seismic, and 2021 loads to apply to residential structures based on code-referenced load standards.
Be able to describe various methods for making connections Understand how connections are expected to perform Understand various locations in a load path that require sound connections Understand what type of connections provide continuity to the foundation Equivalencies: There are several design tools and standards to assist engineers, architects, and building officials with the design of shear walls. Reference 22012 connector products available in the marketplace will be made without identifying particular manufacturers.
A comprehensive table listing section by section changes to the WFCM, including modifications to Supplement and Appendix material, is available at www.
Wood Frame Construction Manual for One- and Two-Family Dwellings & Commentary to the WFCM
Understand the WFCM uses and scope limitations. Using plans from a 2-story residence, participants prescriptively design the structure to resist high wind, seismic, and typical residential gravity loads. Wind speeds are higher, but load factors for design are also adjusted so that the net effect will be a reduction of wind pressures in some regions Line The primary changes to the WFCM include: Be familiar with the design approaches and referenced standards in the WFCM.
New risk-based maps generally reduce areas of highest seismic risk along the New Madrid fault and in the Charleston, SC area.
Revised map contours will influence Seismic Design Categories of some geographic areas. In addition, this presentation will provide an overview of the significant changes in the WFCM relative to the previous edition. The WFCM represents the state-of-the-art for design of one- and two-family dwellings for high wind, high seismic, and high snow loads.
In general, the framing systems described in the WFCM utilize repetitive member wood assemblies. Its reference in the IBC and IRC will allow for its use in those jurisdictions adopting the latest building code. The Wood Frame Construction Manual WFCM will be used as the basis for loads and load paths that must be determined in design of low-rise wood frame construction.
Note that Chapter 2 also contains some necessary construction details.
These details have been derived from typical code provisions and are included in Chapter 2 for the convenience of the designer. This option is mobile friendly and compatible with all devices, including mobile tablets and smart phones.
Identify and understand the basic shear wall system to resist wind and seismic loads. The local authority having jurisdiction should be consulted to determine whether conversion to a mph basis is permissible. The latter tends to provide more conservative results. Eng and Loren Ross, P. Chapter 2 provides minimum loads for buildings within the scope of this document for the purpose of establishing specific resistance requirements.
The design example uses plans from a 2-story residence as the basis for a structural design to resist high wind, seismic, and snow loads. The WFCM provides engineered and prescriptive design requirements for wood frame construction used in one and two-family dwellings.
For fastener design values, the NDS is the reference standard. Ground snow loads in the WFCM take into account both balanced and unbalanced snow load conditions. An integral Appendix of the WFCM still contains uplift strap and ridge strap capacity tables for those wishing to maintain that option.
Attendees will learn to use prescriptive tables to size wood members and connections to resist high wind, seismic, and snow loads in the wall and floor systems. First Name Last Name.
Walls sheathed with wood structural panels can be used to resist uplift alone, or simultaneously resist uplift and shear from wind forces. This article originally appeared in the Winter issue of Wood Design Focus published by the Forest Products Society and is reprinted with permission. Design properties 2102 horizontal diaphragms and shear walls were incorporated in the integral Supplement of the WFCM. Shear wall story offset limits. Attendees will learn to use checklists and detailing summaries to ensure a complete load path is prescriptively designed for the wall and floor systems.
Provisions contained in this document that are not included in the IRC are considered good practice recommendations. 0212 range of structural elements are covered, including sawn lumber, structural glued laminated timber, wood structural sheathing, I-joists, and trusses. Be familiar with the significant changes between the and WFCM. Leave a Comment Click here to cancel reply.
Wood Frame Construction Manual –
Be able to describe how loads are distributed to buildings both vertically and horizontally Be able to describe several different load paths that are critical to improved building performance during high winds Be able to recognize structural configurations or significant loading in building framing that might present construction challenges to framing continuous load paths Be able to recognize construction defects that could potentially fail under high wind loads Equivalencies: Shear wall segments are permitted to be offset out-of-plane from the story below by a maximum distance equal to the depth, d, of the floor joists Figure 2where all of the following conditions are met:.
WFCM Commentary only available with purchase. Due to minimal design information on elevated foundations in the building code, this webinar is intended to provide some design basics that may not be readily available. Frank Woeste ator e-mail: Foundation systems utilizing elevated piles will be emphasized.
2012 Wood Frame Construction Manual for One- and Two-Family Dwellings & Commentary to the WFCM
Browse FAQs for this topic. This unit will provide an overview of the significant changes to the DCA 6 and include several examples showing application of the guide.
American Society of Civil Engineers. Learn to use prescriptive tables to size wood wdcm and connections to resist high wind, seismic, and snow loads in the roof story system.
Learn to use checklists and detailing summaries to ensure a complete load path is prescriptively designed for the roof story. Among the concerns is the number of tie-downs required for shear walls, which can present both cost increases and practical construction challenges. This course will outline several resources available for shear wall design and compare design results. The design example uses plans from a 2-story residence wffcm the basis for a structural design to resist wind, seismic and snow loads.